LibreOffice mail merge with conditional text based on database field content

[Gary Dale <garydale@rogers.com>]

Hoping somewhere here knows more about LibreOffice mail merge than 
people in the LibreOffice forums.  :)

I'm using LibreOffice 3.5.4.2 (Debian/Wheezy) and am having an awful 
time trying to get conditional text to work.

As an example, I have a database field that contains a single letter 
(either F or M) denoting gender. I want to replace that with either 
"female" or "male" in the actual document, based on whether the current 
record refers to a female or male.

I have a conditional text function, where the function is:

Results.RESULTS.GENDER == "F"

The then part is:

female

and the else part is:

male


Unfortunately the output page always says female no matter what the 
database field contains.

I have other fields that I'm similarly trying to do a relatively 
straightforward translation without any luck.

Either conditional text doesn't work at all or I'm missing something. 
Given that the latter is far more likely, can someone point out what I'm 
doing wrong?